Matchmaster 12MM-DF02 TV Antenna Signal Tester, Digital TV Signal Finder, Designed to ensure that you position and angle your digital TV antenna in the correct direction for best reception, Suitable for the home, caravan, boating and leisure enthusiast

Features:
• Designed to ensure that you position and angle your digital TV antenna in the correct direction for best reception
• Suitable for the home, caravan, boating and leisure enthusiast
• Provides LED lights to show signal strength for antenna adjustment
• Easy to use, compact design
• Includes 9V battery